Tool for contracting or expanding demountable rims



J. W. ROBERTS.

TOOL FOR CONTRACTING 0H EXPANDING DEMOUNTABLE RIMS.

APPLICATION FILED NOV. 3. 19211 1,; 424 6 8Q. Patented Aug. 1, 1922.

Lw. ROBERTS.

TOOL FOR CONTRACTING 0R EXPANDING DEMOUNTABLE RIMS. APPLICATION FILED NOV. 3. I921.

gq gg Patented Aug. 1, 1922.

2 SHEETSSHEET 2.

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specification or'nettmrmem; P t t u 19 1922 application filed November 8, 1821. serial No. 512593.

of which the following is a specification.

My invention relates to a tool for contracting or expanding demountable rims of automobile wheels.

An importantv object of the invention 15 to provide a device of the above mentioned iii character, which is connected with the rim near its split end, and is adapted to suitably contract or expand the rim, without liability of permanently bending or spring ng the run. a

A further ohject of the invention is to provide a device for the above mentioned chsreeter, which is simple in construction, cheap to manufacture, and positive and rehable in operation. v

A. further object of the invention is to provide a device of the above mentioned character, which isadjustable for use in connection with rims of difierent sizes or widths.

Uther objects and advantages of the invention will he apparent during the course of the iollowingdescription.

In the eccompdnying drawings forming a part of thisspecification, and in which hke numerals are employed to designate like parts throughout the same,-

Fig. 1 is a sid elevation of a tool embodymy invention, showing *ig. 2 is 'a plan view 0 the same,

Fig; 3 is an end elevation of the tool,

Fig. 4% is perspective of one of the sliding- "blocks, and, v v

Fig; dis a similar view of one olthe cross members or bars; 3

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my inventiom the' numeral 10 desi nates cross membersor hers, rovided in their end portions with longitud nal slots-11, for recei'ving the shanks 12 of clemping hooks 13'.

p The ends of the-shenks 12 arescrew threaded to receive winged nuts 14. It is obvious that the shanlis12 ere sdjustnble within the. slots 11 longitudinally either-transverse member or'har 1d, and-hence may be adjusted in sccordance with the width or the split rim 15, with which they enga%e. The hooks-i3 en gage over the edges 0 the rim end are the same in use,

brought into clamping engagement therewith b manipulation of the winged nuts 14. In or er that the cross members or bars 10 may not slip circumferentially upon the rim 15, they are provided with blocks 16, upon their outer sides, which blocks are serrated or provided with teeth 17, as shown. The numeral 18 desi netes sliding blocks, having'screw threaded openings 19 to receive'the screw threaded portions 20 of a turn-buckle rod 21; The screw threaded portions 20 are ri ht and left screw threads, and the threads 0 the openings 19 receivin screw threaded portions are right anf left screw threads respectively, as is obvious.

The blocks 18 slide or move longitudinally upon the turn-buckle rod 21, when this red is turned, as is obvious. The sliding blocks 18 are provided at their outer ends with arms 22, preferably integral therewith. These arms have inc ined faces 23. Theends of the arms 22 pro'ecthetween aperatured knuckles 24 prefer-ah y formedintegral with the inner side of the cross members or bars 10, as shown. j Pivot elements or bolts 25 pass through the apertures 26 in the ears and through an aperture 27 in the arm '22. The inclined face 23 permits the transverse member or'bar10'to swing inwardly, but limits its outward swinging movement.

'lhe means to turn the turn-buckle rod 21' includes a ratchet wheel or toothed wheel 28, 4

- 28. A double ended do 32 is pivoted between the arms 30, as s own at 33, and is adapted to be swung to reverse positions in engagement with the wheel 28, whereh the lever 29 may turn the rod 21 in either irec-.

tion. a

In thense of thetool, the transverse mem-' hers or hers 10 are arranged near the ends of the split rims 15, and are clamped thereto by. adjustingthe nuts 14. I The serrated or prevent any slippingof toothed blocks 17 the transverse members 10upon the rim.

By'swinging the lever 29 back and forth, the rod 21 is turned in the desired direction, and

after the latch 34 of the rimis opened, one end of the rim may be odset inwardly of the other end and further operation of the tool will serve to pro erly contract the rim. As the rensverse niem ers 10 ere connected with the the rim near its ends, the greater portion of the rim is left free to be subjected to a gradual bending operation, and hence there is no tendency for the rim to become permanently bent or sprung, as is frequently the case where the contracting force is applied to a relatively small portion of. the rim.

It is to be understood that the form of my invention herewith shown and described,

' is to be taken as a preferredexample of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the s irit of my invention or the scope of the subjolned claim.

Having "thus described my invention, I

claim In a device of the character described, a

pair of transverse bars provided upon their 1 2o outer faces with serrated blocks integral therewith, said blocks being spaced from the ends of saidbars, said bars having pairs of spaced knuckles upon the inner sides thereof adjacent to and opposite said blocks,

said bars having elongated slots in their ends, clamping elements adjustably mounted in'the slots, blocks having screw threaded openings and provided with arms adapted for insertion between said knuckles, said arms beingadapted to engage at their ends with said bars, said arms being cut away near their ends at correspondin sides whereby the bars may swing inwar y in one di rection with relation to said rims, pivoted elements connecting the knuckles and arms 

